Farm-gate.



,H. H. DEUTSUHBR.

FARM GATE.

APPLICATION FILED APR.22, 1911.

Patented July 7, 1914.

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' WITNESSES:

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THU NORRIS PETERS CO.. PHCTO-LITHO WASHINGTON. D. C

H. H. DEUTSGHER.

FARM GATE.

APPLIOATION FILED APBHZZ, 191 1.

Patented July 7, 1914.

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THE NORRIS PETERS CO.. PHOTU-LITHO WASHINGTON. D. C

UNTTE STATES FFTQ.

FARM-GATE.

Specification of Letters Patent.

Patented July 7, 1914.

Application filed April 22, 1911. Serial No. 622,693.

To all whom it may concern Be it known that I, HERMAN H. Dno'rsonnn, a citizen of the United States, residing at Carrollton, in the county of Carroll and State of Missouri, have invented certain new and useful Improvements in Farm-Gates, of which the following is a specification.

My invention relates to improvements in farm gates.

The object of my invention is to provide a simple, ethcient and durable farm gate, which may be automatically opened and closed by a wagon, sled, or other vehicle moving past the gate in either direction;

The novel features of my invention are hereinafter fully described and claimed.

In the accompanying drawings which illustrate one form of my invention, Figurel is an elevation showing the gate in the open position. Fig. 2 is a plan view of the gate, shown in solid lines in the closed position and in dotted lines in the open position. Fig. 3 is an elevationshowing the gate in the closed position. Fig. 4 is a cross section, enlarged, on the line a-Z of Fig. 3, the solid lines showing the neutral position of the lever which operates the latch, and the dotted lines showing said lever in the position assumed by it after the latch has been opened in the opening operation of the gate. Fig. 5 is a cross section on the dotted line o-d of Fig. 1. Fig. 6 is an enlarged elevation of one of the crank shafts and parts connected therewith.

Similar reference characters designate similar parts.

1 designates a gate pivoted to a gate post- 2 by hinges 3. Pivoted to the gate by a horizontal pin 4 is a latch 5 adapted to look with a catch 6 on a post 7 when the gate is closed, as shown in Fig. 2. The latch 5 is also adapted to lock with a catch 8 on a post 9, when the gate is open, as shown in Fig. 1. A coil spring 10 is secured to the gate at one end, and at the other end is secured to the latch 5, at the right of the pin 4, as viewed in Fig. 1.

Secured to the gate near its bottom is a bracket 11 to which is pivoted on a vertical axis a lever 12, which extends past the post 2. To the forward end of the lever 12 is secured a flexible device, such as a chain 13 secured to one end of a coil spring 14, the other end of which is secured to the latch 5 at the right of the pin 4, as viewed in Fig. 1. The chain 13 extends between'two rollers 15 and 16 respectively pivoted on parallel horizontal pivot pins 17 mounted in brackets 18 secured to the gate 1. The relations between the springs 10 and 14 are such that, when the gate is closed, the spring 10 will engage the latch 5 with the catch 6. The spring 14 must have suiticient strength to overcome the spring 10 when the lever 12 is swung to open the latch. The rear end of the lever 12 has secured to it one set of ends of two rods 19 and 20 the other ends of which have longitudinally adjustable heads 21. and 22, each having a longitudinal slot 23.

At opposite sidesof the gate 1 are posts 24 and 25 to which are respectively secured boxes 26 and 27 having mounted therein respectively rock shafts 28 and 29 having at one set of ends respectively crank arms 30 and 31.

The crank arms 30 and 31 are provided respectively with two horizontal rollers 32 and The crank arms 30 and 31 have secured to them respectively below the rollers 32 and 33, two horizontal rods 34 and 35. The last named rods and the rollers 32 and 33 are adapted to be struck by a vehicle wheel, when in the positions shown in Fig. 3, and the vehicle is moving toward the gate 1, so as to rockthe rock shafts 23 and 29 for the purpose of swinging the lever 12 to open the gate.

The rockshaft 28 is provided with an upwardly extending arm, 36 having its upper end disposed horizontally and pivotally mounted in the slot 23 of the head 21. The rock shaft 29 is provided with a downwardly extending arm 37 having at its lower end a horizontal portion pivotally mounted in the slot 23 of the head 22.

Two coil springs 38 and 39 are respectively secured at one set of ends to the posts 24 and 25, the other set of ends being respectively secured to the crank arms 30 and 31. The springs 38 and 39 serve to bring the crank arms 30 and 31 to the inclined positions shown in Figs. 1 and?) after said arms have been swung to horizontal positions by the wheels of a passing vehicle.

Preferably the heads 21 and 22 are pro vided with screw threaded connection with the rods 19 and 20 so that they may be longitudinally adjusted on said rods.

When it is desired to open the gate 1 and the vehicle is moving to the left as viewed in the drawings, the vehicle wheel will strike 1 either the roller 33 or rod 35, depending upon the diameter of the wheel, and the crank arm 31 will be swung past the post 25 and to the horizontal position shown in dotted lines in Fig. 1, thus rocking the shaft 29 so as to swing the lever 12 to the positions shown in dotted lines in Fig. 4, thereby opening latch 5 by means of the chain 13, which is pulled against the roller 15, and

' the coil spring 14, which as the lever 12 is swung, overcomes spring 10 and pulls the latch 5 against the horizontal pin 40 secured in the gate 1. The lever 12 will then cause the gate to swing to the open position, the spring 14 now serving as a yielding means for swinging the gate. When the gate strikes post 9 the latch 5 will lock with the catch 8, thus holding the gate open.

After the vehicle wheel, not shown, has passed off from the roller 33 the spring 39 will swing the crank arm to the inclined position shown in solid lines in Fig. 1. After the vehicle has passed through the gate way the vehicle wheel will strike roller 32, which with the crank arm will have been moved to the position shown in Fig. 1, and

will swing the roller 32 and crank arm-3O to the horizontal position at the other side of the post 24, thereby rocking the rock shaft 28 so as'to swing the lever 12 in a direction opposite to the direction in which it was swung when the gate wasopened. The

the crankarm 30 to the position shown in Fig. 3. All the parts will then be as shown in Fig. 3.

The 'slots 23 in the heads 21 and 22 per- Gopies 01' this patent may be obtained for five cents each, by addressing the Washington, D. 0.

mit the springs 10 and the chain 13 .to swing the lever 12 to the neutral position, when the gate has been opened or closed. a

A vehicle passing to the right, as viewed in the, drawings, will operate the mechanism in a manner similar to that just described. It will thus be seen that a vehicle moving in either direction will automatically open and close the gate, if the vehicle is guided so as to have one of its wheels contact with the crank arm rollers. I

Various modifications of my invention may be made, within the scope of the appended claims, without departing from the spirit of my invention.

Having thus described my invention, what I claim and desire to secure by Letters Patent, is p 1. The combination with a swinging gate, of a rock shaft having a crank arm provided with two horizontal devices disposed at dif ferent distances from the axis of the rock shaft and adapted to be struck by a vehicle wheel so as to rock the rock shaft, andmeans for swinging the gate'when the rock shaft is rocke 2. The combination with a swinging gate,

of a rock shaft having a crank arm provided with two horizontal devices disposed at different distances from the axis of the rock shaft and adapted to, be'struck by a vehicle wheel so as to rock the rock shaft, a post to which the rock shaft is pivoted, a spring connected to the crank arm and to the post for moving the crank arm from a horizontal to an inclined position, and means for swinging the gate when the rock shaft is rocked.

In testimony whereofl have signed my name to this specification in the presence of two subscribing witnesses.

Witnesses:

JOHN G. HoUsToN, KATE PFISTER.

HERMAN H. DEUTSCHER; by

Commissioner of Patents 

